648703164 has 12 divisors (see below), whose sum is σ = 1513640744. Its totient is φ = 216234384.

The previous prime is 648703157. The next prime is 648703193. The reversal of 648703164 is 461307846.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×648703164² = 841631589967221792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27029287 + ... + 27029310.

Almost surely, 2^648703164 is an apocalyptic number.

It is an amenable number.

648703164 is an abundant number, since it is smaller than the sum of its proper divisors (864937580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648703164 is a wasteful number, since it uses less digits than its factorization.

648703164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54058604 (or 54058602 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 648703164 is about 25469.6518232975. The cubic root of 648703164 is about 865.6626345839.

The spelling of 648703164 in words is "six hundred forty-eight million, seven hundred three thousand, one hundred sixty-four".